France have battled their way to the Euro 2024 quarter-finals despite a misfiring attack that once again failed to click in Monday's tense 1-0 win against Belgium.

It took an own goal, the tournament's ninth, with just five minutes remaining in Duesseldorf to give France a nerve-jangling victory that raised fresh questions about the form of their key forwards.

While France celebrated Jan Vertonghen's own goal with gusto, boss Didier Deschamps acknowledged it could have been a far more comfortable passage to the last eight if they taken a host of earlier chances.

No France player has scored in open play in four matches in Germany as the likes of Kylian Mbappe and Antoine Griezmann struggle to reproduce the thrilling performances which carried Les Bleus to the 2022 World Cup final.

Deschamps's side have been worryingly inaccurate in front of goal and they needed two fine saves from Mike Maignan to keep them on level terms before Vertonghen diverted Randal Kolo Muani's shot into his own net.

France had the better of possession, played and completed more passes and had 20 shots to Belgium's five but only worked Red Devils goalkeeper Koen Casteels once before Vertonghen's own goal.

Portugal goalkeeper Diogo Costa saved three Slovenia penalties to earn his side a 3-0 shoot-out victory after Cristiano Ronaldo redeemed himself from the spot in a dramatic Euro 2024 last 16 clash on Monday.

Portugal forward Ronaldo broke down in tears after missing a penalty in the first period of extra-time in the goalless tie in Frankfurt.

But he recovered to convert in the shoot-out as Portugal scraped through to set up a blockbuster clash with France in the quarter-finals.

Slovenia battled valiantly to keep Portugal at bay, with Jan Oblak making a stunning save to keep out Ronaldo's penalty after Diogo Jota was fouled.

However, Ronaldo, Bruno Fernandes and Bernardo Silva all scored in the shoot-out and Slovenia's trio missed, sending the Selecao through in heart-stopping fashion.

Portugal coach Roberto Martinez reverted to a more familiar 4-3-3 system after his side were embarrassed by debutants Georgia in their last group game when he deployed three at the back.

The Euro 2016 winners dominated the ball and created their first chance after 12 minutes when Silva's inviting cross just evaded Ronaldo and Fernandes could not turn home at the far post.

Slovenia, playing in their first ever knock-out match at a major competition, maintained their defensive shape well and limited Portugal's opportunities.

Former Real Madrid striker Ronaldo directed a soft header at his old nemesis, Atletico Madrid keeper Oblak, under vital pressure from Vanja Drkusic.

The Slovenian defender was booked moments later for bringing down the surging Rafael Leao as he charged towards Oblak's goal. Ronaldo smashed the free-kick narrowly over the bar with the goalkeeper at full stretch. (AFP)